TI-2025-35277 Aliases CVE-2025-56223 GHSA-4r59-7pwm-p489

A lack of rate limiting in the component /Home/UploadStreamDocument of SigningHub v8.6.8…

LOW 39CWE-770Published 2025-10-20 · Updated 2026-07-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-770.

Summary

A lack of rate limiting in the component /Home/UploadStreamDocument of SigningHub v8.6.8 allows attackers to cause a Denial of Service (DoS) via uploading an excessive number of files.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00464 40th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ascertia:signinghub::::::::	up to 8.6.8	Vulnerable	Ascertia

cpe:2.3:a:ascertia:signinghub:*:*:*:*:*:*:*:* Versions up to 8.6.8 Vulnerable ·Ascertia

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-56223
2026-10-03 Alias added: GHSA-4r59-7pwm-p489

References

Advisory 1

https://github.com/saykino/CVE-2025-56223

TI-2025-37948 An open redirect in Ascertia SigningHub User v10.0 allows attackers to redirect users to… CVSS 3.1MEDIUM 6.1
TI-2025-35276 A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to… CVSS 3.1CRITICAL 9.8
TI-2025-35274 An arbitrary file upload vulnerability in SigningHub v8.6.8 allows attackers to execute… CVSS 3.1CRITICAL 9.8
TI-2025-34145 In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset… CVSS 3.1CRITICAL 9.8
TI-2025-35278 A lack of rate limiting in the One-Time Password (OTP) verification endpoint of… CVSS 3.1HIGH 8.1
TI-2025-35275 Incorrect access control in SigningHub v8.6.8 allows attackers to arbitrarily add user… CVSS 3.1HIGH 7.1

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences